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Dynamic Fracture Analysis of Adhesively Bonded Joints Using Explicit Methods
- Source :
- AIAA Journal. 45:2778-2784
- Publication Year :
- 2007
- Publisher :
- American Institute of Aeronautics and Astronautics (AIAA), 2007.
-
Abstract
- An experimental and computational study of adhesively bonded test configuration of the double cantilevered beams (DCB) using Cohesive Zone Models under dynamic loading is presented. Explicit methods which have a marked advantage over implicit methods for dynamic analysis have been used. The response of the DCB test specimens were modeled in LS-DYNA R . Cohesive zone model (CZM) which define the interfacial tractions to the opening displacements are used to model crack initiation and crack growth in the adhesive. Parameters for the CZM law are determined using experimental data from simple test configurations like the DCB for Mode I. The CZM law implemented through a user defined material model (UMAT) was used to model the adhesive in the adhesively bonded DCBs. Simulations for DCB with aluminum adherends correlated very well to the experiments. Good correlation between the simulation and the experiment for the composite DCB is achieved if the displacement history of the adherend tip, obtained from digital images, is used as the prescribed boundary conditions, instead of the conventional assumption of a constant velocity being imparted to the adherends tips by the falling wedge in the drop tower.
- Subjects :
- Engineering
Cantilever
Materials science
business.product_category
business.industry
Aerospace Engineering
Fracture mechanics
Structural engineering
Displacement (vector)
Finite element method
Dynamic load testing
Wedge (mechanical device)
Cohesive zone model
Dynamic loading
Fracture (geology)
Adhesive
Boundary value problem
Composite material
business
Material properties
Dynamic testing
Subjects
Details
- ISSN :
- 1533385X and 00011452
- Volume :
- 45
- Database :
- OpenAIRE
- Journal :
- AIAA Journal
- Accession number :
- edsair.doi.dedup.....8ec3f72a2986004735ce5e70073b0c45
- Full Text :
- https://doi.org/10.2514/1.26088